Based on these results, calculate the effectiveness of pasteurization at the various time points (i. e. % of CFU/ml at 30, 60, 120 and 240 seconds versus CFU/ml of unheated milk).

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals